title: [Hematological characteristics of hypoplastic MDS patients with chromosomal abnormalities, who had been followed for aplastic anemia with normal karyotypes].
abstract: During 1990 to 1993, five patients who had been treated in our hospital for aplastic anemia (AA) with a normal karyotype, were found to have hypoplastic myelodysplastic syndromes (hMDS); three patients with RA, one RAEB, and one RAEB-T, and all of them have chromosomal abnormalities. The mean age of the hMDS patients (4 men, 1 woman) was 51.0 years (range 31-61). We retrospectively studied the hematological features of the 5 cases in the early stage without chromosomal abnormalities. They showed, 1) appearance of erythroblasts (3/5), 2) more reticulocyte counts than typical AA (mean 7.8 x 10(4)/microliter), 3) macrocytic anemia (mean MCV 106fl) in peripheral blood, 4) relative erythroid hyperplasia (M/E ratio 0.2-1.5), and 5) low lymphocyte counts (mean percentage of lymphocytes 32, 8%) in bone marrow. Considering about the differences or transformation between AA and hMDS, it is interesting that all five patients have initially had a normal karyotype and subsequently developed chromosomal abnormalities.
authors.affiliation: First Department of Internal Medicine, Hirosaki University School of Medicine.
authors.forename: Y
authors.initials: Y
authors.lastname: Tamai
authors.forename: H
authors.initials: H
authors.lastname: Takami
authors.forename: R
authors.initials: R
authors.lastname: Nakahata
authors.forename: Y
authors.initials: Y
authors.lastname: Nakui
authors.forename: Y
authors.initials: Y
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Akagi
authors.forename: K
authors.initials: K
authors.lastname: Kariya
authors.forename: K
authors.initials: K
authors.lastname: Tsushima
authors.forename: A
authors.initials: A
authors.lastname: Munakata
authors.forename: S
authors.initials: S
authors.lastname: Kawamura
mesh_terms: D000328:Adult; D000741:Anemia, Aplastic / Q000097:blood* / Q000175:diagnosis / Q000235:genetics; D002869:Chromosome Aberrations; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D009190:Myelodysplastic Syndromes / Q000097:blood* / Q000175:diagnosis / Q000235:genetics*; D012189:Retrospective Studies